| 考虑井筒压降的水平井流速及压力分布研究 |
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| 引用本文： | 李华锋,王庆,冯祥.考虑井筒压降的水平井流速及压力分布研究[J].断块油气田,2011,18(3):366-368. |
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| 作者姓名： | 李华锋 王庆 冯祥 |
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| 作者单位： | 李华锋,Li Huafeng(中国石油集团测井有限公司长庆事业部,陕西,西安,710000);王庆,Wang Qing(中国石油大学石油工程教育部重点实验室,北京,102249);冯祥,Feng Xiang(中海油田服务股份有限公司油田生产事业部,天津,300452) |
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| 基金项目： | 国家科技重大专项"热力开采后稠油油藏提高采收率技术" |
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| 摘 要： | 针对井筒摩擦和加速度对井筒压降的影响,根据质量守恒定律和动量定理推导了水平井筒内压降计算的基本公式,建立了与油藏耦合的水平井沿程流速与压力分布计算模型.求解该模型可以得到考虑井筒压降的水平井沿程流速与压力分布.研究发现:水平井水平段沿程压力靠近趾端变化较小,靠近跟端变化较大;由于径向入流的存在,使得水平井沿程呈现变质量...
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| 关 键 词： | 水平井 变质量流 压力降 耦合 数学模型 |
Research on flow velocity and pressure distribution of horizontal well considering wellbore pressure drops |
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| Li Huafeng,Wang Qing,Feng Xiang.Research on flow velocity and pressure distribution of horizontal well considering wellbore pressure drops[J].Fault-Block Oil & Gas Field,2011,18(3):366-368. |
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| Authors: | Li Huafeng Wang Qing Feng Xiang |
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| Affiliation: | 1.Changqing Well Logging Division of Logging Co.Ltd.,PetroChina,Xi′an 710000,China;2.MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;3.Oilfield Production Department,China Oilfield Services Limited,CNOOC,Tianjin 300452,China) |
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| Abstract: | Pressure drops in horizontal wellbore have great influence on the production performance of horizontal well.This paper considered the influence of wallbore friction and accelerationon on pressure drops in horizontal well.Based on the principle of mass conservation and momentum,the mathematical model calculating the pressure distribution and flow velocity of horizontal well coupled with reservoir was built.The pressure distribution and flow velocity of horizontal well can be calculated by solving the model.The study shows that the pressure change in the toe section is small along the horizontal direction and the pressure change near the heel section is great.Due to the existence of radial inflow,the horizontal well appears the feature of variable mass flow and the velocity along the horizontal direction increases from toe section to heel section.The productivity of horizontal well is negatively correlated with the fluid viscosity,the fluid density and the distance from horizontal section to the bottom of the reservoir.It is positively correlated with the well diameter,production pressure difference,permeability and reservoir thickness of horizontal well. |
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| Keywords: | horizontal well variable mass flow pressure drops coupling mathematical model |
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